Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dua lang cao snippets" » "cua lang cao snippets", "quan lang cao snippets", "dual land cao snippets", "dua nang cao snippets", "dua lang co snippets", "dua quang cao snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dua lang cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dua lang cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dua lang cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dua lang cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.